Why Is Crypto Down Today? Oil, Fed Bets and $330M Liquidations Stall the Market

This Monday morning, traders are asking, 'Why is crypto down today?' as total crypto market capitalization fell -2% to about $2.9 trillion on Sunday and into Monday, September 28, after President Donald Trump rejected an Iranian proposal to reopen the Strait of Hormuz.

Bitcoin slipped to near $82,000 after briefly topping $85,000; Ethereum traded near $2,650; and XRP stayed just below $1.50, interrupting the crypto market's September rebound.

The question isn't whether a single rejected diplomatic overture can move a $2.9 trillion asset class on its own. It's whether the Trump-Iran standoff is the trigger point for a repricing that was already forming around oil, yields, and Federal Reserve expectations.

Why is Crypto Down Today? The Hormuz Strait and Trump Causing Fresh Fear Across the Markets

Iran had put a specific plan on the table at the UN General Assembly: a seven-day window to reopen the Strait of Hormuz and pause fighting before wider talks. Trump turned it down.

He said Iran "cannot have a nuclear weapon" and that the conflict should end "very soon," while declining to rule out new strikes before the November midterms. No fresh military action had been confirmed as of publication.